Labeling- process



Aug. 9, 1927.

w. H BENTLEY LABELING PRooEss Filed April 25,

Can/fing, seaZ/zg a/zd )oa/fa! .cooling ajo/@wams gmmm am A# W WMM mii lli 'roll or are passed therethrough.

through in suitable conveyors. A plurality of spray nozzles 8 are arranged in chamber 7 in such manner that a fine spray of lacquer is discharged into thechamber and is uniformly deposited on cans as lthey Ericess lacquer may be drawn off from bottom' of the tank through a pipe 9V by means of a lacquer pump l0 and forced back through ll into' .a storage and pressure tank l2 to be Yagain passedthrough the nozzles 8,

or any other suitable spray arrangement may be utilized. rlhe cans are preferably still relatively Warm or hot when they reach the spray chamber and the tine spray lirst deposited thereon immediately hardens a suiiicient amount to eifectually seal any small holes which may exist in exposed .metal portions.` As the 4labeled can pro- `Vceeds through the chamber it is completely and uniformly covered With fa suitable thick Y is still tacky.

, chamber 14 for a relatively short time, and

FromV the spray room the completely lafquered and sealed cansV are passe-d over a series of tracks or conveyors 13 through a during Which time cooling and drying air lcurrents may be passed over `the cans by means of a circulating fan l5 or in any other suitable manner. The cans may be kept in the drying and cooling 'chamber lll for an intervalas short as a fraction of a minute, and may then be immediately packed while still tacky and Warm.v No harm is done by `packingthe cans before the coating is thoroughly dried because the labeled surfaces aieprevented vfrom contacting With each other due to the rims or beads on the cans which act as spacers and a slow drying varnish Which Will produce a high gloss may thereforebe used. The cans are also not injured if shipped While Warm as the coating in labor, cost and time, together with iinproved quality of product may he attained in canning operations by adoption of the process set forth. nvarnishcd labels may be purchased at low cost and the varnish or lacquer as applied in the present process in addition to producing a higher gloss on Athe label, effects a simultaneous sealing of minute holes and excludes atn'iosphere from contacting with the metallic surfaces of the can, in this manner effectively preventing corrosion and rust.

Having described a preferred embodiment of the invention Which is desired to be sc cured by Letters Patent and claimed as new is:

l. The process of treating cans which coniprises the steps of labeling the cans ivhilc hot, spraying the cans to deposit thereon a protecting glossy coating of material, and cooling the sprayed cans.

rlhe pocess as settorth in claiin l. in which the colling of the cans is only partial. `-ether with the step of packing the par-y tialy cooled cans for shipment.

' 3. pre-cess of treating sealed cans coniing nnnn'ials packed in a partial vac n which comprises the steps of labeling ie cans, and passing the labeled cans through an extended spray of coating inatmfial to deposit thereon a thin uniform coating ol protecting material which hardens sullif fiently as applied to prevent the coating from being` forced into minute holes existing in the cans and of sufficient thickness to cffectively seal any minute holes and preserve the existing vacuum inv the cans.

4i. The process as set forth in claim Il ivhich the ans are labeled and passed through said spi-ay While hot.

l A. process of treating sealed cans con taining foods packed in a partial vacuum which comprises the steps of applying colored labels to the cans while hot, pa 'ig the labeled cans While still hot to deposit thereon a uniform coating of glossing and protecting material which hardens sulliciently as applied to prevent. the coating` from being forced into minute holes existing in the cans, and drying the coating on said cans.

'lhe process as set forth in claim :3 in which the drying of 'the coating is only partial together with the stop of packing the partially dried cans for shipment.

ln testimony whereof, l alli); my signature.

WALTER H. BENTLEY.

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